動(dòng)詞 emit:

1. expel (gases or odors)
   同義詞：breathe, pass off
2. give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
   同義詞：give out, give off
3. express audibly; utter sounds (not necessarily words)
   同義詞：utter, let out, let loose

1. The cheese was emitting a strong smell.
   干酪散發(fā)出強(qiáng)烈的氣味。
2. A volcano emits smoke and ashes.
   火山散發(fā)著煙和灰。

e.mit

v.tr.（及物動(dòng)詞）
e.mit.ted,e.mit.ting,e.mits
To give or send out matter or energy:
發(fā)射：給出或放出物質(zhì)或能量：
例句：
isotopes that emit radioactive particles; a stove emitting heat.
發(fā)射出放射性粒子的同位素；發(fā)出熱量的爐子

To give out as sound; utter:
發(fā)出：如聲音般發(fā)出；發(fā)射出：
例句：
.She emitted her small strange laugh.(Edith Wharton)
.她發(fā)出了她的小而奇怪的笑聲.(伊迪絲·華頓)

To voice; express:
說出；表達(dá)：
例句：
emit an opinion.
表達(dá)一個(gè)觀點(diǎn)

To issue with authority, especially to put (currency) into circulation.
發(fā)行：通過政府發(fā)行，尤指使（貨幣）進(jìn)入流通

來源：
Latin ômittere [to send out]
拉丁語 ômittere [派出]
ô-, ex- [ex-]
ô-, ex- [前綴，表.從前的，前任的.]
mittere [to send]
mittere [送]

【引伸】
emit.ter
n.（名詞）